Tide pump



April 3, 1928. 1,665,140

s. D. MASTER TIDE PUMF 3 Sheets-Sheet 1 Filed Nov. 24. 1923 INVENTORATTO R N EY April 3, 1928.

S. D. MASTER TIDE PUMP Filed Nov. 24, '192 3 Sheets-Sheet 2 INVENTORATTORNEY April 3, 192s. 1,665,140

S. D. MASTER TIDE PUMP Filed Nov. 24, 1923 5 Sheets-Sheet 5 I' l [I k Hl i l l a n a |l|l:| I o w Patented Apr. 3, 1928.

UNITED STATES SHAVUKSHA 1). MASTER, OF BOMBAY, INDIA.

TIDE PUMP.

Application filed November 24, 1923. Serial No. 676,795.

This invention relates to means for utilizing the tides to produce powerfor running various kinds of machinery, such as electric generators andthe like.

Another object of the invention is to make the tide actuatepumps forforcing water to a high level where it can be made to run a turbine orthe like.

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts, to behereinafter-fully described, illustrated in the accompanying drawingsand specifically pointed out in the appended claims.

In describing my invention in detail, reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which Figure lis a sectional view of one form of the invention.

Figure 2 is a sectional view of another form which shows the powerproducing apparatus carried by the pump apparatus itself.

Figure 3 is a modification of the form shown in Figure 2;?

Referring to Fig. 1 the piston 27 of the pump C is connected with acasing 28 which contains a weight 29. The casing is provided with aflange 30 which engages a shoulder 31 of the float 8" and a valve 32 isplaced in the delivery pipe 33 of the pump. In this form of theinvention water is drawn into the pump cylinder through the inletpipe 34which is supplied with a check valve 35 when the parts are raised by thefloat and the valve 32 is kept closed so that when the float drops thecasing with the weight will remain in raised position as the water in;the pump cylinder cannot escape. Then the valve 32 is opened, either bymanual or other means, so that the weight in the casing will dischargethe water from the pump cylinder with great force. This arrangementprevents the water from being gradually discharged as the weight slowlydrops on the ebb tide.

In Figure 2 the housing 36=is carried by the pump cylinder 37 and saidhousing contains the turbines 38 and the generator 39. The turbines areconnected by the pipes 40 with the discharge port 41 of the pumpcylinder, a valve 42 being arranged in said nected with the base of thecasing, these parts acting as means for preventing water reaching thepump parts. I The casing 36 is provided with the weights 54. The top ofthe casing is connected by the cable 55 with a. float 56 so that theraising of the float by the incoming tides will act to lift the casingon the pump cylinder and thus draw water into the pump cylinder throughthe passage 49. When the float drops the weight of the parts will causethe casing in the pump cylinder to move downwardly, thus forcing thewater in the pump cylinder into the turbines to actuate the same andthese in turn will operate the generator. The cables 45 and are of suchrelative lengths that the valve 42 will be closed before the float 56reaches its highest point. The valve will remain closed until the floatdrops to a certain point when it will be opened by the lowering of thefloat 44 so that the weight of the parts will suddenly act upon thewater in the pump, thus causing the same to be discharged under greatpressure against the blades of the turbines.

In Figure 3 a pair of pumps E are shown which have their cylindersstationary instead of movable as in Figure 2. The pistons 57 of thesecylinders are connected by the hollow piston rods 58 with the float 59and pipes 60 connect the passages in the piston rods with the turbines61, which, with the generator 62 are arranged in the float. A building63 may be carried by the float in which an operator may live to takecare of the apparatus. The passage in each piston rod is controlled by avalve 64 which is provided with a weighted arm 65 and this arm isconnected by a cable 66 with a float 67 so that the valve will be closedbefore the float reaches its highest point, thus permitting the valve tobe opened after the tide drops so as to place the water in the pumpc'linders under pressure by the weight of t e' oat and permit it to besuddenly discharged into the turbines as soon as the tide drops to apoint where the floats 67 will slacken the cables 66 to permit thevalves to open.

From the foregoing it Will be seen that the tides are utilized toproduce power and that the action is automatic and the parts require butlittle attention. The turbines shown in Figures 2 and 3 are providedWith valve controlled outlets 38.

It is thought from the foregoing description that the advantages andnovel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the constructionand in the combination and arrangement of the several parts, providedthat such changes fall within the scope ol the appended claims.

What I claim is V 1. An apparatus of the class described comprising apump, a float actuated by the tides, means for operating the pump bythemovement of the float, means for holding the Water in the pump cylinderunder presas sure While the tide is dropping and means for releasing theWater When the tide recedes farther.

2. An apparatus of the class described comprising a pump, a floatactuated by the tides, means for operating the pump by the movement ofthe float, means for holding the Water in the pump cylinder underpressure While the float is dropping and automatic means for releasingthe Water.

8. A device of the class described comprising a pump, a float actuatedby the tides, means for connecting the float with a movable part of thepump, a valve in the pump passage and a second float, means forconnecting said second float With the valve, the relative length of theconnecting means between the main float and the movable part of the pumpand the connecting means between the second float and the valve beingsuch that the valve Will remain closed until the main float drops to acertain point so that the Water in the pump Will be placed underpressure before the valve is opened.

In testimony whereof I athX my signature.

SHAVUKSHA D. MASTER.

